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이왕제(Lee Wang-Je),백남춘(Baek Nam-Choon),이경호(Lee Kyoung-Ho),허재혁(Heo Jae-Hyeok) 한국태양에너지학회 2015 한국태양에너지학회 논문집 Vol.35 No.2
In this study, energy performance analysis of houses in zero energy demonstration town(ZeT) was carried out using the monitoring results. This ZeT was composed 29 zero energy individual houses(ZeH) which were applied passive as well as active technologies. The results are as follows. (1) Residents are generally considered to have been lacking basic mind to save energy, (2) In particular, average yearly total energy consumption per house is 12,834 kWh and specific heating energy is 53.2kWH/㎡·yr which is higher than that of passive house. This is because of one of the reason just pointed out in subsections (1). (3) Most part of the residual energy load are supplied with only renewable energy, but not operating energy for geothermal heat pump which is use of cheap electricity.
이왕제(Lee, Wang-Je),윤종호(Yoo, Jong-ho),백남춘(Baek, Nam-Choon),신우철(Shin, U-Cheul) 한국태양에너지학회 2011 한국태양에너지학회 학술대회논문집 Vol.2011 No.11
Of school buildings, university building requires various case analysis unlike buildings in the elementary, middle and high schools in accordance with its characteristic for variables such as characteristic of department,construction structureand material, the number of persons admitted and schedule.Through the case research on the ‘D’university located in Daejeon,this study made a comparison on the monthly and yearly consumption of gas and electricity of the most recent 3 years and implemented analysis on the usage pattern and standby power of air conditioning and heating by the hour and month using PCCS(Power Consumption Consulting System) as respects electricity that is considered to have a possibility of energy-saving. The result of analysis showed that enormous amount of electric power was used during the night time for freeze protection and burst in winter season and standby power was increased in winter season as a result.
이왕제(Wang Je Lee),임희원(Hee Won Lim),신우철(U Cheul Shin) 대한설비공학회 2020 설비공학 논문집 Vol.32 No.6
Serpentine PV/T (Photovoltaic/Thermal) hybrid solar collector is a co-generation system that produces electricity and heat using one collector. In this study, we analyzed the thermal-electrical performance by theoretical analysis and experiment. The serpentine absorber whose solar circuit comprises one whole pipe without connection, is simpler in its composition than the header-riser absorber and also has low flow rate, making it possible to improve thermal stratification in the water tanks. Especially when the absorber is laminated with solar cell through a thin adhesive layer of ethylene-vinyl acetate (EVA), the thermal resistance is minimized and the manufacturing process can be automatized. Zhang and Lavan’s analytical model was introduced to determine the heat removal factor of serpentine absorber, and iterative method was used to obtain these solutions linked to the solar cell power generation analysis. To verify the validity of the theoretical analysis, the thermal performance of PV/T collector was tested in accordance with KS standards (KS B 8295). As a result, the numerical results agreed well with the experimental data.